Unusual Options Activity
PRTA Unusual Options Activity - Prothena
- Last active day
- August 21, 2026
- Active days (30d)
- 1
- Biggest recent print
- Call $10.0000 · $61K
AI summary
On August 21, 2026, Prothena Corporation plc (PRTA) saw an unusual options activity with a single print. A call option with a strike price of $10.00, expiring on September 18, 2026, was traded, generating a premium of $60,960. This transaction reflects a volume-to-open interest ratio of 13.4, indicating a notable level of activity relative to existing positions. There were no put options traded during this session, suggesting a one-sided interest in the call option. This marks the first active day for PRTA options in the last 30 days, highlighting a potential increase in investor attention on the stock. The significant premium associated with this call option could suggest a strong sentiment among traders regarding potential movements in PRTA's stock price leading up to the expiration date.
AI-generated summary
Prints on August 21, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| PRTA | Call | $10.0000 | 09/18/26 (27d) | 13.4× | $61K | 49% |
History
- 2026-08-211 prints$61K calls$0K puts
- 2026-07-201 prints$34K calls$0K puts
- 2026-07-171 prints$34K calls$0K puts
- 2026-06-231 prints$41K calls$0K puts
- 2026-06-221 prints$41K calls$0K puts
- 2026-06-111 prints$0K calls$75K puts
- 2026-06-101 prints$0K calls$75K puts
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